EARTH SCIENCE
EARTHQUAKES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It cannot account for fault movement during an earthquake.
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It measures large earthquakes far from the seismograph.
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It estimates the total energy released from an earthquake.
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It increases in magnitude as amount of damage increases.
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Detailed explanation-1: -Damage can be measured using the Richter scale. The amount of damage increases as magnitude decreases. Earthquakes that cause maximum damage are the most common.
Detailed explanation-2: -It estimates the total energy released from an earthquake.
Detailed explanation-3: -Each increase of one unit on the scale represents a 10-fold increase in the magnitude of an earthquake. In other words, numbers on the Richter scale are proportional to the common (base 10) logarithms of maximum wave amplitudes.
Detailed explanation-4: -The Richter magnitude involves measuring the amplitude (height) of the largest recorded wave at a specific distance from the seismic source. Adjustments are included for the variation in the distance between the various seismographs and the epicentre of the earthquakes.